Sony KD-43X7 G Series Service Manual page 52

2.6.10 USB Port 1 or 3
2.6.10 USB Port 1 or 3 – No Detection / Cannot Play / No picture / No Sound – Checking Point
USB (B-board Checking) – Checking 5V Points [USB Port 1 or 3]
Board
Name
BB9
Board PWB (A side) Detail
C7012
Have 5V?
C7037
52
SYS SET